The fins Im having trouble with is Lessacher Quattro Cut Weed. They are white and black and made of G10 material. But I guess not many have tried them out.

The Duo is the one im thinking of. I actually tried a DUO today. Borrowed from a friend. It seems to be a good fin but I didnt get fully up to speed as wind was not strong enough. I had my iS111 and Sailworks 7.1 NX cambersail.

I guess I will have to have 2 fins. 32 and 36 Duo Weed. And yes they will be used for slalom sailing but also just race with friends.